Raspberry Pi Forums

edsulst

Thank you all for answering to my question.
It's clear to me now that I can use more pins than I thought.

// Edwin

edsulst

Sorry, but I forgot to tell you that I have a Raspberry Pi 3 model B V1.2 with a 40 pin header. Now I only used the green colored pins and I wasn't sure if other colors could be used. But if I read the posts correctly it's possible to use the blue, purple and pink also. GREAT !! I did read somewhere...

edsulst

Hi There, For my project I'm using 17 GPIO pins, but I need one extra. The GPIO pins I'm using are alle the green one's as mentioned here: https://www.raspberrypi-spy.co.uk/2012/06/simple-guide-to-the-rpi-gpio-header-and-pins/#prettyPhoto/1/ Is it possible to use another GPIO pin, for example 2, 3, ...

edsulst

The last code is exactly the same as the first code you posted ?
I can't find anything different.

Wait, I now see the difference: If GPIO.input(7) == 0:

By the way, I now supply 5V to the relayboard by an external 5V power supply instead of the 3.3V of the Raspberry Pi.

edsulst

When I add: if GPIO(7) == 0: time.sleep(0.1) I got an error: if GPIO(7) == 0: TypeError: 'module' object is not callable. When Google this it seems like I need to import something, but I don't see what. I already import the GPIO with import RPi.GPIO as GPIO Can you tell me what I'm suppose to do her...

edsulst

No, I did not remove the jumper.
It's still connected to JD-VCC

I put 3.3v (from my Raspberry) on the VCC pin next to the IN1, IN2, etc, and connected the ground to my Raspberry.

edsulst

Hi pcmanbob I'm using this board: https://www.hobbyelectronica.nl/product/relais-module-8-kanaals-5v/ (sorry the page is in Dutch. I'm not using the 5V pin on the Raspberry, but I'm using the 3.3V pin. All my relays are clicking when I set the output to LOW There are 8 buttons. Every button links to...

edsulst

Hi there, I have 8 buttons defined as input. (GPIO.IN, pull_up_down=GPIO.PUD_UP) The signal is connected from the button, through a resistor, to the input GPIO pin (pins 7,11,13,15,29,31,33 and 35) Pin numbers 12,16,18,22,32,36,38 and 40 are defined as output (GPIO.OUT). Do I need to add an resistor...

edsulst

I added it before exit 0

After editing the python script and entered the full path to the logging file it works.

No I have to figure out what I can do about debounces.
When I press the button once, the log tells me that is has pressed 2 or 3 times within the same time.

edsulst

Sorry, I made a typo.

I've openen the file etc/rc.local and added the following to the end of the file:

Code: Select all

/home/pi/pushbuttons.sh

The python script is in /home/pi/ and that's where i'm reffering to in pushbuttons.sh.
So it seems logic to me that logging.txt has to be created in /home/pi

edsulst

I'll post my complete python script: #!/usr/bin/env python import RPi.GPIO as GPIO import os import sys from subprocess import Popen import time import logging logging.basicConfig(format='%(asctime)s %(message)s',datefmt='%d-%m-%Y %H:%M:%S', filename='logging.txt',level=logging.DEBUG) def button_sto...

edsulst

I've added the following code in my Python script: import logging logging.basicConfig(format='%(asctime)s %(message)s',datefmt='%d-%m-%Y %H:%M:%S', filename='logging.txt',level=logging.DEBUG) And in the code that correpond with the buttons, i've added logging.info So it looks like this: #If GPIO(7) ...

edsulst

Hi there, I searched online, but couldn't find an answer, maybe you can. I have a Python script and from that script I can open several mp4 files with a push of a button. (see: https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=276119&p=1673158) So far so good. What I would like to know if its ...

edsulst

Maybe there is another solution for killing the lights.

When the video is over, the light can go out.
The problem is that I don't know the exact time of each video.
Is it possible to return a status when the video is done en when that status is set, the lights are turn out ?

edsulst

I stumbled upon that page also.

It looks great. To bad there are no screenshots available.
I'll take a look at Pi Presents.

Thanks for you support !!

edsulst

I ordered the double one.
As I see on the image, the relais use a common ground and 5V.
And with the two other pins I can control the relais.

edsulst

You are right. I use the wrong numbers. The relays are connected to pin 29 and 30. I have ordered this one: https://www.hobbyelectronica.nl/product/relais-module-1-kanaals-5v/ (sorry, but the page is in Dutch) As I see in the specs it needs 5 volt and pin 2 of the Raspberry would give me 5 volt. If ...

edsulst

Hi pcmanbob, I want to use 2 relays (for now). I have ordered them, but did not receive them. I want to connect them to pin 14 and 15. This is the code so far (without testing the relay, because I don't have them right now) import RPi.GPIO as GPIO import os import sys from subprocess import Popen GP...

edsulst

Online I found some code to play a video, with a push on a button. This works great. What I also would like is to use a relay to turn on a lightbulb when the button is pressed. So when the button is pressed, the video will start to play and a light switches on. The light has to turn on for 1 minute....

edsulst

It's working now !! Many thanks @pcmanbob There was another error after changing time.sleep(2) I also needed to change the word true in the while. It has to be a capital T according to the error log. My code is now this: while True: Time.sleep(2) After booting to Firefox in full screen I can press t...

edsulst

I've changed the code and it doesn't seem to work.

The error I've got in rc-local.out is:

+ hostname -I
+ _IP=
+ [ ]
+ /home/pi/createpic.sh
File "/home/pi/takepic.py", line 33
time sleep(2)
^
SyntaxError: invalid syntax

edsulst

This is my complete rc.local file: #!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By d...

edsulst

I've added exec > /tmp/rc-local.out 2>&1;set -x in the rc.local file. And the result of the rc-local.out file is: Traceback (most recent call last): File "/home/pi/takepic.py", line 32, in <module> message = input("Waiting for picture\n\n") # Run until someone presses enter EOFError: EOF when readin...

edsulst

Ok, both codes can work. Now the other problem about autostarting the script. When I boot my Raspberry Pi, it start in desktop mode and opens Firefox fullscreen at http://localhost (and shows an image) When I press the button nothing is happening but I want to create a photo with the script and than...

edsulst

pcmanbob, Even with your code I can't get it to work, so I did some searching and came across this code. This code seems to work. I can add more commands to be execute and this works. Also I only need 2 wires. One to the 3.3V and one to pin 10 to take a picture. In the code above I needed 3 wires. #...

Search found 28 matches

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Re: Use of GPIO pins

Use of GPIO pins

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Re: Resistor on output

Re: Resistor on output

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Resistor on output

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log file access

Re: Play video and use a relay

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Re: Play video and use a relay

Re: Play video and use a relay

Re: Play video and use a relay

Play video and use a relay

Re: Push button to make picture

Re: Push button to make picture

Re: Push button to make picture

Re: Push button to make picture

Re: Push button to make picture

Re: Push button to make picture